use full domain

Signed-off-by: Ahmar Suhail <ahmarsu@amazon.co.uk>

mountpoint-s3-client/tests/common/mod.rs

@@ -49,7 +49,7 @@ pub fn get_secondary_test_region() -> String {
  }
 
 pub fn get_test_domain() -> String {
-    std::env::var("S3_DOMAIN").unwrap_or(String::from("com"))
+    std::env::var("S3_DOMAIN").unwrap_or(String::from("amazonaws.com"))
  }
 
 pub async fn get_test_sdk_client() -> s3::Client {

mountpoint-s3-client/tests/endpoint.rs

@@ -51,7 +51,7 @@ async fn test_addressing_style_region(addressing_style: AddressingStyle) {
 async fn test_addressing_style_uri(addressing_style: AddressingStyle) {
     run_test(|region| {
         let domain = get_test_domain();
-        let uri = format!("https://s3.{region}.amazonaws.{domain}");
+        let uri = format!("https://s3.{region}.{domain}");
         Endpoint::from_uri(&uri, addressing_style).unwrap()
     })
     .await;
@@ -64,7 +64,7 @@ async fn test_addressing_style_uri(addressing_style: AddressingStyle) {
 async fn test_addressing_style_uri_dualstack(addressing_style: AddressingStyle) {
     run_test(|region| {
         let domain = get_test_domain();
-        let uri = format!("https://s3.dualstack.{region}.amazonaws.{domain}");
+        let uri = format!("https://s3.dualstack.{region}.{domain}");
         Endpoint::from_uri(&uri, addressing_style).unwrap()
     })
     .await;
@@ -77,7 +77,7 @@ async fn test_addressing_style_uri_dualstack(addressing_style: AddressingStyle)
 async fn test_addressing_style_uri_fips(addressing_style: AddressingStyle) {
     run_test(|region| {
         let domain = get_test_domain();
-        let uri = format!("https://s3-fips.{region}.amazonaws.{domain}");
+        let uri = format!("https://s3-fips.{region}.{domain}");
         Endpoint::from_uri(&uri, addressing_style).unwrap()
     })
     .await;
@@ -89,7 +89,7 @@ async fn test_addressing_style_uri_fips(addressing_style: AddressingStyle) {
 async fn test_addressing_style_uri_fips_dualstack(addressing_style: AddressingStyle) {
     run_test(|region| {
         let domain = get_test_domain();
-        let uri = format!("https://s3-fips.dualstack.{region}.amazonaws.{domain}");
+        let uri = format!("https://s3-fips.dualstack.{region}.{domain}");
         Endpoint::from_uri(&uri, addressing_style).unwrap()
     })
     .await;

mountpoint-s3/tests/fuse_tests/fork_test.rs

@@ -18,6 +18,43 @@ fn run_in_background() -> Result<(), Box<dyn std::error::Error>> {
     let region = get_test_region();
     let mount_point = assert_fs::TempDir::new()?;
 
+    let mut cmd = Command::cargo_bin("mount-s3")?;
+    let mut child = cmd
+        .arg(&bucket)
+        .arg(mount_point.path())
+        .arg(format!("--prefix={prefix}"))
+        .arg("--auto-unmount")
+        .arg(format!("--region={region}"))
+        .spawn()
+        .expect("unable to spawn child");
+
+    let st = std::time::Instant::now();
+
+    let exit_status = loop {
+        if st.elapsed() > MAX_WAIT_DURATION {
+            panic!("wait for result timeout")
+        }
+        match child.try_wait().expect("unable to wait for result") {
+            Some(result) => break result,
+            None => std::thread::sleep(std::time::Duration::from_millis(100)),
+        }
+    };
+
+    // verify mount status and mount entry
+    assert!(exit_status.success());
+    assert!(mount_exists("mountpoint-s3", mount_point.path().to_str().unwrap()));
+
+    test_read_files(&bucket, &prefix, &region, &mount_point.to_path_buf());
+
+    Ok(())
+}
+
+#[test]
+fn run_in_background_automatic_region_resolution() -> Result<(), Box<dyn std::error::Error>> {
+    let (bucket, prefix) = get_test_bucket_and_prefix("test_run_in_background");
+    let region = get_test_region();
+    let mount_point = assert_fs::TempDir::new()?;
+
     let mut cmd = Command::cargo_bin("mount-s3")?;
     let mut child = cmd
         .arg(&bucket)